Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Finance Lease, Principal Payments	$ (412)	$ (12)
Cash flows from operating activities:
Net income	339,778	398,615
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,254	10,146
Equity-based compensation expense	21,926	37,910
Contract land deposit and other impairments (recoveries), net	37,453	(23)
Gain on sale of loans, net	(41,574)	(67,919)
Mortgage loans closed	(2,280,199)	(2,373,748)
Mortgage loans sold and principal payments on mortgage loans held for sale	2,491,119	2,428,410
Distribution of earnings from unconsolidated joint ventures	0	2,156
Net change in assets and liabilities:
Increase in inventory	(255,852)	(144,618)
Decrease (increase) in contract land deposits	16,020	(13,554)
Increase in receivables	(2,825)	(9,597)
Increase in accounts payable and accrued expenses	26,512	32,771
Increase in customer deposits	26,130	7,961
Other, net	(19,073)	(5,891)
Net Cash Provided by (Used in) Operating Activities	370,669	302,619
Cash flows from investing activities:
Investments in and advances to unconsolidated joint ventures	(38)	(335)
Distribution of capital from unconsolidated joint ventures	0	7,167
Purchase of property, plant and equipment	(8,217)	(10,699)
Proceeds from the sale of property, plant and equipment	449	1,069
Net Cash Provided by (Used in) Investing Activities	(7,806)	(2,798)
Cash flows from financing activities:
Purchase of treasury stock	(216,582)	(304,479)
Proceeds from the exercise of stock options	126,046	178,831
Net Cash Provided by (Used in) Financing Activities	504,330	(125,660)
Net increase in cash, restricted cash, and cash equivalents	867,193	174,161
Cash, restricted cash, and cash equivalents, beginning of the period	1,160,804	732,248
Cash, restricted cash, and cash equivalents, end of the period	2,027,997	906,409
Supplemental disclosures of cash flow information:
Interest paid during the period, net of interest capitalized	12,593	12,052
Income taxes paid during the period, net of refunds	11,740	71,486
Proceeds from Issuance of Senior Long-term Debt	598,860	0
Payments of Debt Issuance Costs	$ (3,582)	$ 0